code: def test_infer_schema_only_multipoints():
      df = GeoDataFrame(
          geometry=[
              MultiPoint(
                  [
                      city_hall_entrance,
                      city_hall_balcony,
                      city_hall_council_chamber,
                  ]
              )
          ]
      )
  
      assert infer_schema(df) == {
          "geometry": "MultiPoint",
          "properties": OrderedDict(),
      }
  
imports: from collections import OrderedDict
  from shapely.geometry import LineString, MultiLineString, MultiPoint, MultiPolygon, Point, Polygon
  import pandas
  import pytest
  import numpy
  from geopandas import GeoDataFrame
  from geopandas.io.file import infer_schema
label_desc: Use image node_id 3 for calling a global function with example usage: test_infer_schema_only_multipoints() without return types